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Finding the Fourth Proportional to 478,678.39, 660,567.62 and 260,889.03

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Solution

The fourth proportional to 478,678.39, 660,567.62 and 260,889.03 is: 360,022.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,678.39 : 660,567.62 = 260,889.03 : x
  2. Step 2: Convert to fraction form
    478,678.39/660,567.62 = 260,889.03/x
  3. Step 3: Cross multiply
    478,678.39x = 660,567.62 × 260,889.03
  4. Step 4: Simplify right side
    478,678.39x = 172,334,846,283.43
  5. Step 5: Solve for x
    x = 172,334,846,283.43/478,678.39
  6. Step 6: Final answer
    x = 360,022.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.